Inoac is Japan’s leading manufacturing and marketing businss catering for housing & construction materials as well as automotive, electronic, chemical products.

With international network of more than 50 group companies in the world, Inoac is well equipped to meet the challenges of the future.

Inoac is a global company that puts a premium on teamwork and innovation.
We also recognize our corporate responsibility to our employees, our customers, and the environment, and our strategic mission embraces them all.

Our Mission

To create eco-friendly and life-enriching products through persistent development of business that contributes positively to the global environment and social life.

To quickly find and meet potential needs of customers and to create a rewarding workplace filled with ingenuity and originality.

Our Vision

To be the “Only One System Supplier” company which can deliver attractive products with the most suitable production, quality control, and sales system.

To be a challenging group which focuses its effort to create new products and technologies to realize customers’ dreams and hopes.

Corporate History

1956		Started production of Polyethylene pipes
1966		Established Housing and Construction Materials Division
1969		Started production of rigid polyurethane foam insulation pipes
1973		Developed extrusion method for low density polyethylene foam insulation pipes
1975		Developed extrusion method for medium density polyethylene foam insulation pipes
1988		Started production of PEX pipes
1990		Changed company name to “INOAC CORPORATION”
1991		Started production of exterior cosmetic duct for air conditioner
1992		Started production of under floor heating system
1999		Started production of insulated PEX pipe for potable water
2000		Acquired ISO 9001 certification
2001		Acquired ISO 14001 certification
2004		In-house company management started Started production of geothermal heat exchange system
2005		Started production of interior cosmetic duct for air conditioner
2006		40th anniversary of Housing and Construction Materials Company
2007		Launched multi-layer aluminum tubes for hot water heat pumps. (Eco-cute)
2008		All business transferred to newly established "INOAC Housing & Construction Materials Co., Ltd."
		Launched leak-free "Correct Flare Nut" for air-conditioners.
2009		Developed original push-fit fittings formulti-layer aluminum pipes.
		Launched "Conic Joint" flareless fittings for aluminum pipes.
2011		Acquired CE certification for "Mr.Heat Bond" heat bond device for PE insulation.